Acr50b remote spotlight problem

[Betterdays123]

I have an acr 50b remote spotlight.
No green light or light of any kind on pad.
Bulb and fuse good.
Just stopped working.
Any thoughts on trouble shooting?
Can keypad go bad?
I know the main controller is in my anchor box.
What can I do to check which component I should change?
Help

[Uhehner]

Do you have a multi-meter and know how to use it?   First check for power (12  volts) at the orange (+) and blue (-) wires at the master controller. You can find a schematic of the wiring on-line. Google "ACR 50b searchlight manual". Capt. George